I see you're talking about "forward" based on the moment her toe pick hit the ice , but it's actually the rotation of the BLADE that is counted underrotation

In order to be considered fully rotated, a jump must achieve at least three-quarters of the final rotation – so a triple would need to rotate at least 2.75 times in the air prior to any part of the blade hitting the ice for the landing.

I appreciate your quote for infos, but isn't that just an abstract/theoretical rule of achieving rotation? From what I grasp from the actual judgements in real competitions, what I meant was that practically speaking, the rotation on the ice coming from the landing does not start from when the skaters' toe strokes the ice around about few degrees -the center of his/her weight is still in the air- rather it's when the ENTIRE part of blade hits the ice where the actual rotation in the air finishes then draws curve mark on the ice. A lot of skaters rotate triples this way and usually get ratified unless their full blades rotate more than 90 degrees on the ice. At least that's how I see it.

This is ridiculous! SHE again?! Is she like the only tech panel they have??:sheesh:
And Yuna's 3-3 from GPF was not underrotated. If you don't remember what it was like, maybe that NYT video analysis will refresh your memory. They slow replay it many many times there. She didn't land forward. Why are some people saying that?
Anyway, what's done is done I guess. I just wish Yuna to show what she is capable of at the Olympics. GO! Yuna!

Well, I hope the tech panel will be very abstract/theoretical on every lady this time, including Kim.

In order to be considered fully rotated, a jump must achieve at least three-quarters of the final rotation – so a triple would need to rotate at least 2.75 times in the air prior to any part of the blade hitting the ice for the landing.

Well, I see a lot of beautiful triple jumps being downgraded if the tech panels stick to the abstract/ theoretical rule, but at least that's better than being partial, so.

The biggest issue

The biggest issue here is to not repeat the controversy again in the world of figure skating, since this can jeopardize the sport to be in an Olympic game. This may sound ridiculous, but already some people are not happy about the assignment, causing people to believe the existence of controversy. As long as the judges abide to the rules, I don't think there will be a big problem.

As to quiet down some discussion on Yuna's under-rotation call, Scott Hamilton, possibly one of the better people to call under-rotation, said that he would not call it an under-rotation when reviewing her replay of 3Lz-3T in slow motion. The bigger issue is the major discrepancy of ALL the judges and technical specialist on this specific call. The positive GOE's on the jump should not exist when the jump is under-rotated. As far as I know, this discrepancy did not happen often and possibly one of the rare one. This can bring some issues to the table, and this is why we are talking about it still.

.. I stated my point based on my interpretation on many UR calls and stand by it. In essence I have every right to voice how I feel within my logic and there's no way you can say I know nothing about figure skating because of that. Besides, why are you alreay jumping to the conclusion that I'm a Yuna fan?

The positive GOE's on the jump should not exist when the jump is under-rotated.

Not really. If the judges think other aspects of the jumps were great, they can give +GOE even for underrotated jumps. But that can't be that good because it's like -1 ~ -2 GOE for underrotation. Most of the cases the total GOE ends up near 0 or +0.XX GOE at best.
The problem of this case is that Yuna's so called underrotated 3-3 got +1.6 GOE. It means even though it was underrotated (hence -1 ~ -2 GOE) other aspects were so~~~~~~~~~~~~~~ great it deserved more than +3 GOE for others, thus +1.6 in total. OR, it's simply NO JUDGES felt any underrotation or whatsoever. The latter makes more sense to me.
(Although some crazy anti-Yuna fans will say there is third possible explanation: that Yuna bribed the judges. LOL Come on, bribe all nine judges? Why not just bribe three tech controllers? It's way easier, cheaper and more effective.)

.. I stated my point based on my interpretation on many UR calls and stand by it. In essence I have every right to voice how I feel within my logic and there's no way you can say I know nothing about figure skating because of that. Besides, why are you alreay jumping to the conclusion that I'm a Yuna fan?

I apologize, I'm just used to hearing things like that from her uberfans.

I am really suprised at seeing that some yu-na's fans think she always jumps cleanly.

common, she is a human, she sometimes makes a mistake and jums a lip and a cheating 3-3.
Thats why jugdes sometimes give her attentions.

It's about questionable calls. Have you ever heard any Yuna fan say anything about her 2A-3T< at GPF LP? Or her 3-3< at SA LP? Or her 3F< at SA LP? No. Because they were all right calls.
But 3-3< at GPF SP? NO. Big no. That is a really questionable and I dare say wrong call.
And FYI, if the rotation is boarderline, the tech callers are supposed to call in favor of the skaters. Yuna's 3-3 at GPF was not even borderline.